lkml.org 
[lkml]   [2012]   [Aug]   [7]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[ 019/109] ASoC: wm8962: Redo early init of the part on resume
Date
From: Greg KH <gregkh@linuxfoundation.org>

3.4-stable review patch. If anyone has any objections, please let me know.

------------------

From: Mark Brown <broonie@opensource.wolfsonmicro.com>

commit e4dd76788c7e5b27165890d712c8c4f6f0abd645 upstream.

Ensure robust startup of the part by going through the reset procedure
prior to resyncing the full register cache, avoiding potential intermittent
faults in some designs.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
sound/soc/codecs/wm8962.c | 3 +++
1 file changed, 3 insertions(+)

--- a/sound/soc/codecs/wm8962.c
+++ b/sound/soc/codecs/wm8962.c
@@ -3710,6 +3710,9 @@ static int wm8962_runtime_resume(struct
}

regcache_cache_only(wm8962->regmap, false);
+
+ wm8962_reset(wm8962);
+
regcache_sync(wm8962->regmap);

regmap_update_bits(wm8962->regmap, WM8962_ANTI_POP,



\
 
 \ /
  Last update: 2012-08-08 01:21    [W:0.290 / U:1.804 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site